74HC173D,653 Equivalent & Substitute Parts

Part Overview

The 74HC173D,653 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 4-bit parallel data storage and control applications. This device features a master reset function, tri-state non-inverted outputs, and operates across a 2V to 6V supply voltage range. The part is currently in active production status with 3,117 units available in stock.

Substitute parts are necessary when the original manufacturer discontinues production, when alternative packaging formats better suit assembly requirements, or when inventory constraints require sourcing from alternative suppliers while maintaining functional and electrical compatibility.

Substiute Parts

74HC173D,653

Nexperia USA Inc.In Stock: 321674HC173D,653 Datasheet

Current PartRFQ

CD74HC173M

Texas InstrumentsIn Stock: 2910CD74HC173M Datasheet

SimilarRFQ

CD74HC173M96

Texas InstrumentsIn Stock: 4588CD74HC173M96 Datasheet

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CD74HC173MT

Texas InstrumentsIn Stock: 866CD74HC173MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 74HC173D,653 is determined by the following critical parameters:

Functional Equivalence Requirements:

• Type: D-Type flip-flop architecture
• Number of Elements: 1
• Number of Bits per Element: 4
• Output Type: Tri-State, Non-Inverted
• Trigger Type: Positive Edge
• Function: Master Reset capability

Electrical Compatibility Requirements:

• Voltage - Supply: 2V ~ 6V range
• Package / Case: 16-SOIC (0.154", 3.90mm Width) form factor
• Mounting Type: Surface Mount

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Series: 74HC logic family

Substitute parts must satisfy all functional and electrical requirements. Variations in clock frequency, propagation delay, quiescent current, and operating temperature range are acceptable provided the substitute meets or exceeds the performance envelope of the application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CD74HC173M96 (Texas Instruments)

The CD74HC173M96 is the recommended substitute for new designs and ongoing production. This part maintains active product status, offers the highest inventory availability (4,553 units), and is supplied in Cut Tape and Digi-Reel packaging formats suitable for automated assembly. All functional and electrical parameters align with the 74HC173D,653 requirements. The 4ns increase in propagation delay and 4µA increase in quiescent current remain within acceptable operational margins for most 74HC logic applications.

Secondary Substitute: CD74HC173M (Texas Instruments)

The CD74HC173M provides functional equivalence but carries Last Time Buy status, indicating limited future availability. This part is suitable for replacement applications where existing inventory must be consumed or for applications with extended lead time requirements. Tube packaging may require manual handling in assembly operations.

Not Recommended: CD74HC173MT (Texas Instruments)

The CD74HC173MT is discontinued at DiGi Electronics with minimal inventory (791 units). This part should not be selected for new designs or long-term production planning due to supply discontinuation status.

Compliance Verification:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical EAR99 export classification. No additional compliance documentation is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can CD74HC173M96 be used as a direct replacement for 74HC173D,653 in existing designs?

A: Yes. The CD74HC173M96 maintains identical functional architecture, output characteristics, and package form factor. The 4ns propagation delay difference and 4µA quiescent current increase do not affect compatibility in standard 74HC logic applications operating within the 2V to 6V supply range.

Q: What is the difference between the packaging formats offered?

A: The 74HC173D,653 is supplied in Tape & Reel format for high-volume automated assembly. The CD74HC173M96 is available in Cut Tape and Digi-Reel formats, suitable for both automated and semi-automated pick-and-place equipment. The CD74HC173M is supplied in Tube format, requiring manual component handling. All three formats contain the identical 16-SOIC die and pinout.

Q: Why does the CD74HC173M show Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has announced end-of-life for this specific part number variant. Existing inventory may be available, but no future production is planned. The CD74HC173M96 variant remains in active production and should be prioritized for new designs.

Q: Are there any temperature range limitations when substituting?

A: The substitute parts offer an extended lower operating temperature limit (-55°C versus -40°C). This provides additional margin for applications requiring low-temperature operation. The upper temperature limit remains identical at 125°C. No thermal derating adjustments are required for standard industrial applications.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes, provided the PCB footprint accommodates the 16-SOIC package form factor. All substitute parts use identical pinout and electrical interface. No circuit modifications or PCB redesign is required for substitution.